Which undermines the whole concept of a ProtestantChurch.
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Protestant church is just short hand term for western denominations that somewhere a ways back broke away from the catholic church. its just short hand. but it doesn’t mean much beyond that. never has.
for example we don’t think of small eastern christian sects in moslem lands —that are not orthodox—as protestant.
Similarly you’ll hear unitarians say the word trinitarian is not used in the bible. that’s because “trinitarian” is short hand for a theological position. same goes for unitarian. unitarian is not used in the bible. its a shorthand word for a theological position.
for that matter the word catholic is not used in the bible. but catholic is not short hand. nor is eastern orthodox. but they can be used as short hand for theological positions.
a definition of terms is always helpful. it saves a lot of trouble later on.